Parts of Vermont endured power outages Saturday as trees were uprooted in soggy soil and fell across power lines.

The National Weather Service has issued a flash flood warning until Saturday evening for parts of Lamoille, Washington, Chittenden and Addison counties. The weather service says small creeks and streams could overflow and water could overwhelm culverts and roadside ditches. Forecasters say road washouts are possible, especially on unpaved back roads.

Green Mountain Power reported scattered outages Saturday in both northern and southern parts of the state. As of 9 p.m. Saturday, more than 2,700 homes were without electricity in Colchester and more than 300 in Springfield. Earlier in the day, about 2,000 homes were reported without power in Brattleboro, but service was restored as of Saturday evening.

Meanwhile, a woman in upstate New York’s Mohawk Valley is unaccounted for after her mobile home was washed away by rising waters Friday in Fort Plain, N.Y. Officials identified her as Ethel Healey.

In Pennsylvania, officials said an 86-year-old Clinton County man was swept into a rain-swollen creek Thursday while trying to retrieve an ATV. State police did not release the man’s name.

Clinton County Director of Emergency Services Kevin Fanning said 18 homes had been damaged by flooding after one part of the county received about 7 inches of rain in an hour Thursday night. The flooding damaged more than 30 miles of roads — not including some state routes repaired immediately under an emergency order — but remained passable.

“Travel at your own risk,” he warned.

A number of communities in the Northeast experienced flash flooding as a result of heavy rain Thursday and Friday.

In upstate New York, the storms caused the Mohawk River and other waterways to overflow. At Little Falls, the river reached more than 3 feet above flood stage late Friday morning before receding, the National Weather Service said.

Gov. Andrew Cuomo toured areas damaged by flooding Saturday and said a disaster declaration would remain in effect for 15 counties.

“We think the worst is behind us for now,” Cuomo said at a briefing in Herkimer.

Cuomo said homeowners whose property was damaged should be eligible for assistance from the Federal Emergency Management Agency.

“It’s traumatic to say the least to see your whole life turned upside down literally in a matter of minutes,” he said.